PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-01:12:40
G10     255.6          30.7               14.1 +/-    1.07      24.3 +/-    1.07  0.160 / 0.400
G13     48.8           26.4               10.4 +/-    1.23      19.7 +/-    1.23  0.150 / 0.470
G15     78.3           57.2               10.5 +/-    0.74      12.2 +/-    0.74  0.050 / 0.050
G16     288.7          15.2                7.7 +/-    1.71      19.0 +/-    1.71  0.040 / 0.040
G20     268.2          43.1               15.5 +/-    1.17      21.5 +/-    1.17  0.090 / 0.130
G21     339.9          63.6                9.5 +/-    0.60      10.5 +/-    0.60  0.080 / 0.110
G26     261.1          13.2               10.6 +/-   16.16      27.4 +/-   16.16  0.040 / 0.060
G29     166.6          44.6               13.0 +/-    1.11      17.7 +/-    1.11  0.060 / 0.060